EXT4-fs (loop0): mounted filesystem without journal. Opts: noblock_validity,bsddf,sysvgroups,norecovery,debug_want_extra_isize=0x0000000000000080,orlov,nogrpid,noauto_da_alloc,nomblk_io_submit,,errors=continue. Quota mode: none. ====================================================== WARNING: possible circular locking dependency detected 5.15.166-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.770/6512 is trying to acquire lock: ffff0000e5f63fc0 (&ea_inode->i_rwsem#9/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline] ffff0000e5f63fc0 (&ea_inode->i_rwsem#9/1){+.+.}-{3:3}, at: ext4_xattr_inode_iget+0x350/0x4f4 fs/ext4/xattr.c:425 but task is already holding lock: ffff0000e5f62a58 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0xea8/0x1440 fs/ext4/inode.c:5510 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ei->i_data_sem/3){++++}-{3:3}: down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 ext4_update_i_disksize fs/ext4/ext4.h:3401 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1403 [inline] ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1551 [inline] ext4_xattr_set_entry+0x274c/0x3118 fs/ext4/xattr.c:1675 ext4_xattr_ibody_set+0x104/0x35c fs/ext4/xattr.c:2243 ext4_xattr_set_handle+0xa08/0x12d8 fs/ext4/xattr.c:2400 ext4_xattr_set+0x1dc/0x350 fs/ext4/xattr.c:2513 ext4_xattr_trusted_set+0x4c/0x64 fs/ext4/xattr_trusted.c:38 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x250/0x2b4 fs/xattr.c:611 path_setxattr+0x17c/0x258 fs/xattr.c:630 __do_sys_setxattr fs/xattr.c:646 [inline] __se_sys_setxattr fs/xattr.c:642 [inline] __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:642 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (&ea_inode->i_rwsem#9/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x32d4/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:789 [inline] ext4_xattr_inode_iget+0x350/0x4f4 fs/ext4/xattr.c:425 ext4_xattr_inode_get+0x148/0x674 fs/ext4/xattr.c:485 ext4_xattr_move_to_block fs/ext4/xattr.c:2595 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2697 [inline] ext4_expand_extra_isize_ea+0xb9c/0x169c fs/ext4/xattr.c:2789 __ext4_expand_extra_isize+0x290/0x348 fs/ext4/inode.c:5851 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5894 [inline] __ext4_mark_inode_dirty+0x4e8/0x924 fs/ext4/inode.c:5972 ext4_setattr+0xf10/0x1440 fs/ext4/inode.c:5513 notify_change+0xa34/0xcf8 fs/attr.c:505 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3265 [inline] do_open fs/namei.c:3612 [inline] path_openat+0x20c4/0x26cc fs/namei.c:3742 do_filp_open+0x1a8/0x3b4 fs/namei.c:3769 do_sys_openat2+0x128/0x3e0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#9/1); lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#9/1); *** DEADLOCK *** 5 locks held by syz.0.770/6512: #0: ffff0000ce388460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff0000e5f62bd0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline] #1: ffff0000e5f62bd0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63 #2: ffff0000e5f62d70 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #2: ffff0000e5f62d70 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0xa74/0x1440 fs/ext4/inode.c:5470 #3: ffff0000e5f62a58 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0xea8/0x1440 fs/ext4/inode.c:5510 #4: ffff0000e5f628a8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #4: ffff0000e5f628a8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5891 [inline] #4: ffff0000e5f628a8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x468/0x924 fs/ext4/inode.c:5972 stack backtrace: CPU: 1 PID: 6512 Comm: syz.0.770 Not tainted 5.15.166-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2011 check_noncircular+0x2cc/0x378 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x32d4/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:789 [inline] ext4_xattr_inode_iget+0x350/0x4f4 fs/ext4/xattr.c:425 ext4_xattr_inode_get+0x148/0x674 fs/ext4/xattr.c:485 ext4_xattr_move_to_block fs/ext4/xattr.c:2595 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2697 [inline] ext4_expand_extra_isize_ea+0xb9c/0x169c fs/ext4/xattr.c:2789 __ext4_expand_extra_isize+0x290/0x348 fs/ext4/inode.c:5851 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5894 [inline] __ext4_mark_inode_dirty+0x4e8/0x924 fs/ext4/inode.c:5972 ext4_setattr+0xf10/0x1440 fs/ext4/inode.c:5513 notify_change+0xa34/0xcf8 fs/attr.c:505 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3265 [inline] do_open fs/namei.c:3612 [inline] path_openat+0x20c4/0x26cc fs/namei.c:3742 do_filp_open+0x1a8/0x3b4 fs/namei.c:3769 do_sys_openat2+0x128/0x3e0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584